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Finding the Fourth Proportional to 679,703.76, 1,019,489.76 and 206,393.28

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Solution

The fourth proportional to 679,703.76, 1,019,489.76 and 206,393.28 is: 309,569.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,703.76 : 1,019,489.76 = 206,393.28 : x
  2. Step 2: Convert to fraction form
    679,703.76/1,019,489.76 = 206,393.28/x
  3. Step 3: Cross multiply
    679,703.76x = 1,019,489.76 × 206,393.28
  4. Step 4: Simplify right side
    679,703.76x = 210,415,835,492.81
  5. Step 5: Solve for x
    x = 210,415,835,492.81/679,703.76
  6. Step 6: Final answer
    x = 309,569.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.